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stanleycan8668


I have a handheld device (RG351V) that runs Pico 8 and Splore. I like to browse Splore at home while connected to Wi-Fi and Favorite games that I like. When I do that, some games are playable even offline, but some are not and give the error "could not connect to BBS."

I am not doing any special steps like downloading the cart manually. Some just seem to randomly work offline without me doing anything. Can anyone help me figure out what's going on? I'd like to play them all offline as easily as possible.

2 comments




Error: Attempt to index global 'W' (a nil value)

Hello! I am having trouble getting collision working with a different system that spawns sprites in from the map screen.

This is the collision tutorial I used: https://youtu.be/Recf5_RJbZI?si=Df6FbJ2FYfCN39Qx
This is the sprite spawning tutorial I used: https://youtu.be/8jb8SHNS66c?si=233nn8z_S1R4R64n

I have watched TONS of tutorials on this and still can't wrap my head around it. A lot of tutorials create very basic collision that has issues, like only being able to work with certain speed values (1,2,4,8,16,etc.) or that don't let your character slide alongside a wall when holding a diagonal.

Can anyone help? I definitely want to use this spawning system in the future to spawn in different types of walls and enemies. I have a feeling that I am misunderstanding how to use the table variables properly, so any explanation would be appreciated!

 
-- game loop --

function _init()
	cls()
	walls={}
	make_player()
	make_walls()
	-- top-left and lower-right
	-- bounds of player area
	a1,b1=8,8
	a2,b2=112,112
end

function _update60()
	-- keep inside the play area
	move_player()
	p.x=mid(a1,p.x,a2)
	p.y=mid(b1,p.y,b2)
end

function _draw()
	cls()
	draw_map()
	draw_player()

	for w in all(walls) do
		spr(w.wsp,w.wx,w.wy)
	end	
end
 
-- map --

function draw_map()
	map(0,0,0,0,16,16)
end
 
-- player --

function make_player()
	p={
	x=40,
	y=40,
	w=8,
	h=8,
	speed=2,
	sprite=1,
	}
end

function move_player()
	--move player with buttons
	--interacts with wall collision
	if (btn(⬅️)) then
		for newx=p.x,p.x-p.speed,-1 
			do
				if not box_hit(newx,p.y,
					p.w,p.h,
					w.wx,w.wy,
					w.ww,w.wh) 
				then
					p.x=newx
			end
		end
	end

		if (btn(➡️)) then
		for newx=p.x,p.x+p.speed 
			do
				if not box_hit(newx,p.y,
						p.w,p.h,
						w.wx,w.wy,
						w.ww,w.wh) 
				then
					p.x=newx
			end
		end
	end

		if (btn(⬆️)) then
		for newy=p.y,p.y-p.speed,-1 
			do
				if not box_hit(p.x,newy,
						p.w,p.h,
						w.wx,w.wy,
						w.ww,w.wh) 
				then
					p.y=newy
			end
		end
	end

		if (btn(⬇️)) then
		for newy=p.y,p.y+p.speed 
			do
				if not box_hit(p.x,newy,
						p.w,p.h,
						w.wx,w.wy,
						w.ww,w.wh) 
				then
					p.y=newy
			end
		end
	end
end

--draw player
function draw_player()
	spr(p.sprite,p.x,p.y)
end
 
-- walls --

function make_walls()
	for x=0,15 do
		for y=0,15 do
			if mget(x,y)==65 then
				add(walls,{
					wx=x*8,
					wy=y*8,
					ww=8,
					wh=8,
					wsp=66
				})
				mset(x,y,64)
			end
		end
	end
end

--wall collision calculations

function box_hit(x1,y1,
		w1,h1,
		x2,y2,
		w2,h2)

		local hit=false
		local xd=abs((x1+(w1/2))-(x2+w2/2))
		local xs=w1/2+w2/2
		local yd=abs((y1+(h1/2))-(y2+h2/2))
		local ys=h1/2+h2/2	

	if xd < xs and yd < ys then
		hit=true
	end

	return hit

end
2 comments